Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Real Estate Investment Property, Accumulated Depreciation	$ 234,349	$ 187,413
Deferred leasing intangibles assets, accumulated amortization	273,602	237,456
Deferred leasing intangibles liabilities, accumulated amortization	$ 12,487	$ 10,450
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	15,000,000	15,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common Stock, shares issued	93,862,783	80,352,304
Common stock, shares outstanding	93,862,783	80,352,304
Series B Preferred Stock
Preferred stock, shares issued	2,800,000	2,800,000
Preferred stock, shares outstanding	2,800,000	2,800,000
Preferred stock, liquidation preference (in dollars per share)	$ 25.00	$ 25.00
Series C Preferred Stock
Preferred stock, shares issued	3,000,000	3,000,000
Preferred stock, shares outstanding	3,000,000	3,000,000
Preferred stock, liquidation preference (in dollars per share)	$ 25.00	$ 25.00